Electric motor



E. L. P. COLARDEAU.

ELECTRIC MOTOR. APPLICATION FILED NOV. 13, i919- Patented May 16,1922.

' 152067LZ07 MWIaZeZZIPJZ Zarcifeau umrso STATES PATENT OFFICE.

EMMANUEL LOUIS PAUL oonnnnnan. on

socrn'rr ETABLISSEMENTS HENRY PARIS, FRANCE, ASSIGNOR 11110 THE onoorra'r, or rams, FRANCE.

nnno'rnrc MOTOR;

To all whom it may concern:

Be it known that l, EMMANUEL LoUIs PAUL Conical-nan, citizen of theFrench Republic, residing at Paris, France, have invented certain new and useful Improvements in Electric lowing is a specification.

The invention relates to means which enable several electric motors to be simultaneously ted from a single source of cur rent, and to be braked simultaneously. This invention relates. more particularly to means for feeding simultaneously the motors of the various vehicles of, a train, and also for braking them simultaneously.

The invention mainly consists in arranging the arinatures and the field magnets of each of the motors, so as to enable the same either to be connected in series and to be shunted then across the terminals of the generator, or each of the arinaturcs to be shunted by resistance, and the iield magnets of the various motors to be connected in series in a circuit closed at the terminals of the generator.

Apart "from this main arrangement, the invention comprises certain other arrangements more particularly referred to hereinafter.

The invention will now be described in detail and illustrated in the accompanying drawing by way of example. In the said drawings:

Figure 1 shows diagrammatically an installation, during the feeding of the motors.

Figure 2 shows a like installation during the braking of the motors, the resistances being gradated to obtain a progressive braking action.

Figure 8 shows a diagram substantially similar to Figure 2, but employing variable resistances to obtain a progressive braking action. v i y A generator at is provided for driving the motors ot' the variousvehicles. Each of the said motors is provided with an armature Z5 b and a field magnet winding bio 620 has 7 One of the brushes of each motor is connected to a wire 0 starting from the brush a of the generator, and the other brush to a contact (Z (Z (Z w At the side 0': each of the contacts 6Z (Z (Z is arranged another contact al (Z 9, 0Z to which is connected one of the ends of Specification of Letters Iatcnt.

Motors, of which the iiolto the brush a of the Patented May 16, 1922.

Application filed November 13, 1919; SeriaiNo. 337,747. V

the field magnet b 6 5 The other end oi each field magnet is connected to a con tact 6 ,6, 6

rit the side of each of these contacts is arranged another contact e 6 6 The first or these contacts 6? is connected generator, the second c to the contact 6 the third 6 ,to the contact 6 and so on, and the cnd'o'f the conductorc is connected to a Contact. f5

thecontact c of the last motorbeing connected to a contact Finally the brushes oi? the motors, which are connected to the wire 0, are connected to one end of a resistance g g", '9 the other and being connected to a contact d d In order to teed the various motors by means oi? the generator a, the contacts al and cl, (1 and (W (Z and CZSO must be connected and also the contacts e and e 6 and 6 and 6 The armature and the field magnet oi. each motor are thus in serice and shunted across the terminals of the generator.

When it is desiredto brake the various motors, the contacts (Z and (Z d and d (Z and (P must be connected together, thus shunting the armatures of the motors by means of a resistance. The contacts (Z and 6 (5 and c (Z and 6 are also connected together, the different field magnets being thus connected in series, after having broken the connections between the contacts (P -d, Z -l and cW-d? Finally the contact f is connected to the contact f, so s to close the "circuit containing the generator at and the various field magnets oi the motors.

The strength of current in the circuit of the field magnets then varied by any desired process; tor instance, it the source of current a constant one, resistances may be introduced, and it the source olicurrent is a variable one, the voltage of the said source may bevaried.

The connections for ensuring the running or the braking oi the motors, may be effected by hand, by means of the brake applying devices mounted on the vehicles; but they may be also ei'l'ected from the car carrying the generator, by means 0t controllers or contact devices.

The power of braking may also be varied by utilizing variable resistances 9*, f, 5/ as shown in Fig. 8, the amount of which can be modified at will, down to the short-circuiting oi" the armature.

Preferably, moreover, the resistances of the various motors are regulated or gradated, as indicated by G, (Ji G in Fig. 2 so that the braking action gradually increases from the first vehicle to the last.

Again, in order to facilitate the manipulation, the contact 7 is no longer arranged on the wire a, but as shown in Figure 3, on another auxiliary wire 0 connected. to the brush c of the generator, and by the side of the said contact arranged another contact 7' connected to the contact 6 of the last motor.

Obviously the invention is not limited to the method described, but comprises any modifications within the scope of the claim.

Having now particularly described and ascertained the nature of my said invention and in What manner the same is to be performed, I declare that what I claim is:

An electric system adapted to be applied to a train of vehicles comprising a generator, a plurality of electric motors 'lor driv- 111g some oit said. vehicles, each of said motors including armature and held windings Vitnesses CHAS. P. PRnssLY, I. JULLIN. 

